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Dirk, please, if you would. I prefer it. It has more of a sort of Scottish dagger feel to it.
— Douglas Adams ‧ Dirk Gently's Holistic Detective Agency
Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker asks to be called Dirk because the name suggests a Scottish dagger. The preference gives a name a sharp, dramatic quality. The humor lies in explaining an ordinary request with such an elaborate image.
Context reviewed